21132412442330 has 32 divisors (see below), whose sum is σ = 43485333857280. Its totient is φ = 7243241460480.

The previous prime is 21132412442327. The next prime is 21132412442413. The reversal of 21132412442330 is 3324421423112.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44702591 + ... + 45172850.

It is an arithmetic number, because the mean of its divisors is an integer number (1358916683040).

Almost surely, 2^{21132412442330} is an apocalyptic number.

21132412442330 is an abundant number, since it is smaller than the sum of its proper divisors (22352921414950).

21132412442330 is a wasteful number, since it uses less digits than its factorization.

21132412442330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89878814.

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21132412442330 its reverse (3324421423112), we get a palindrome (24456833865442).

The spelling of 21132412442330 in words is "twenty-one trillion, one hundred thirty-two billion, four hundred twelve million, four hundred forty-two thousand, three hundred thirty".